Well, finally I realized the power of my onboard graphics card … too lazy to realize even this (it took me a year to realize this obvious fact). I downloaded the latest nVidia drivers from here and also upgrade to the kernel-2.6.20-1.2944.fc6. You can get it from any site which provides rpms or you can install is using yum. Not to forget I did it on Fedora Core 6 – Zod. So, here goes the exact procedure.

Warning: Take a backup of your /etc/X11/xorg.conf file before experimenting with 3D desktop. It help in case of X server crashes.